package com.pw.study.utils;

import java.util.Locale;
import java.util.Scanner;

/**
 * @Author: linux_future
 * @since: 2022/3/16
 **/
public class MyKey {

    public static void main(String[] args) {
        String app = "app";
        String key = "123456";
        String phone = "15708182010";
        System.out.println(app.toUpperCase(Locale.ROOT).substring(0,2));
        //app名称大写前两位+ 特殊字符（@#$）+ 数字（1234）+特殊字符（@*$）+ 账号后4位


    }

    private static void te1() {
        Scanner sc = new Scanner(System.in);
        while(true){
            String line = sc.nextLine();
        }

    }
}
